Static testing and predicting method for shell stiffened structure

A static test and shell technology, applied in special data processing applications, instruments, electrical and digital data processing, etc., can solve the problems of large local area of ​​stiffness, non-negligible, and high cost

Active Publication Date: 2016-11-23
BEIJING INST OF STRUCTURE & ENVIRONMENT ENG +1
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the following situations in the actual operation process: 1. High cost; 2. The measurement data is limited, so it is impossible to measure all the points of interest; 3. The measurement space is limited, and the area where the measurement sensor cannot be arranged (the surface curvature is too large) Large and small closed spaces) are unable to obtain measurement

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Static testing and predicting method for shell stiffened structure
  • Static testing and predicting method for shell stiffened structure
  • Static testing and predicting method for shell stiffened structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] A static test and predictive method for shell reinforced structures, comprising the following steps

[0020] Step 1: Establish a finite element model, establish a corresponding finite element model based on the geometric dimensions, materials, boundary conditions, and loads of the model, and calculate and analyze to obtain the finite element result file;

[0021] Step 2: Obtain the finite element node number of the corresponding position according to the spatial coordinates XYZ of the measuring point, so as to obtain the measuring point information. The measuring point information consists of two files: the finite element node number file, the finite element result file, and the finite element node number file according to The order of the measuring points is the nX1 matrix, and the stress-strain displacement is output through the finite element node number file. The finite element result file is described by the nX3 matrix, where n is the number of measuring points, and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the field of static testing and predicting, and particularly relates to a static testing and predicting method for a shell stiffened structure. Under different load actions and different boundary treatment ways, the static predicting simulation result of the structure is compared with the testing data. Systematic comparison and comprehensive evaluation of correlated errors, which are conducted on static testing and static predicting simulation, are achieved, and the problem that in the past, only extremely specific feature points are subjected to data analysis and comparison is solved; impact factor data of real test or simulation are calculated through contrastive analysis in different grades and accumulation of different boundary simulation ways, different solving ways and different testing methods; and the relation between testing and predicting can be intuitively responded through comparison of cloud charts, curves and similarities, and whether a test is conducted continuously or not, whether a test piece is needed or not and whether human and property are security or not can be determined through evaluation of data.

Description

technical field [0001] The technology belongs to the field of static test and prediction, and specifically relates to a static test and prediction method for a shell reinforced structure. Background technique [0002] The structural strength and stiffness of the launch vehicle are important assessment objects in the development process. At present, we mainly use three methods to analyze: 1. Engineering algorithm analysis; 2. Finite element prediction simulation analysis; 3. Entity static test assessment. Engineering algorithm analysis is mainly used to evaluate the macroscopic strength and stiffness of the structure at the early stage of design. It is characterized by simple application, low cost, less calculation time, almost no visual display, poor accuracy, and the overall trend of the analysis results is correct. However, for launch vehicles such as Products require a high load-carrying ratio of structural unit mass, and more and more fine-grained structural design is re...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F17/50
Inventor 张明利荣克林贾亮侯传涛刘春张明明
Owner BEIJING INST OF STRUCTURE & ENVIRONMENT ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap